Global Patent Index - EP 3099884 A4

EP 3099884 A4 20171018 - HYBRID DRILL BIT HAVING INCREASED SERVICE LIFE

Title (en)

HYBRID DRILL BIT HAVING INCREASED SERVICE LIFE

Title (de)

HYBRIDBOHRMEISSEL MIT ERHÖHTER LEBENSDAUER

Title (fr)

TRÉPAN HYBRIDE DE DURÉE DE VIE ACCRUE

Publication

EP 3099884 A4 20171018 (EN)

Application

EP 15743583 A 20150131

Priority

  • US 201461934697 P 20140131
  • US 201514611167 A 20150130
  • US 2015014011 W 20150131

Abstract (en)

[origin: WO2015117047A1] A method of improving the service life of a drill bit comprises creating a weldment between load bearing portions of the drill bit where the weldment has a preselected root gap greater than about 25 mils and a preselected root face greater than about 25 mils, and where the weldment has a material property greater than the materials being joined.

IPC 8 full level

E21B 10/14 (2006.01); E21B 10/20 (2006.01)

CPC (source: EP RU)

B23K 9/282 (2013.01 - EP); B23K 33/006 (2013.01 - EP); E21B 10/14 (2013.01 - EP RU); E21B 10/20 (2013.01 - EP RU); E21B 10/62 (2013.01 - RU)

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

WO 2015117047 A1 20150806; CA 2937946 A1 20150806; CA 2937946 C 20190430; CN 105940178 A 20160914; CN 105940178 B 20190329; EP 3099884 A1 20161207; EP 3099884 A4 20171018; EP 3099884 B1 20200226; MX 2016009793 A 20161208; RU 2016135277 A 20180305; RU 2016135277 A3 20180702; RU 2681750 C2 20190312; SA 516371580 B1 20210712; SG 11201606085P A 20160830

DOCDB simple family (application)

US 2015014011 W 20150131; CA 2937946 A 20150131; CN 201580006419 A 20150131; EP 15743583 A 20150131; MX 2016009793 A 20150131; RU 2016135277 A 20150131; SA 516371580 A 20160731; SG 11201606085P A 20150131